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 Diodes Incorporated
http://www.diodes.com/
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Diodes Incorporated is a leading global manufacturer and supplier of high-quality, application-specific standard products within the broad discrete
and analog semiconductor markets, serving the consumer electronics, computing, communications, industrial and automotive markets.
Diodes' products include diodes, rectifiers, transistors, MOSFETs, protection devices, functional specific arrays, power management devices
including DC-DC switching and linear voltage regulators, amplifiers and comparators, and Hall-effect sensors.
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Lastest News 
Sept 2008 Power switch family protects USB port in consumer and computing applications
Diodes Incorporated has extended its series of USB power switches with the introduction of 12 new parts, providing a cost effective and
small form fit for USB ports in a wide range of consumer electronics. Offering designers 0.75A, 1.5A and 2.1A current limiting options and a
choice of active-high and active-low enable, the AP21XX optimizes port protection in a host of different systems.
The AP21XX high-side power switch range has been created for USB port applications requiring fast response, high accuracy over-current
and over-temperature protection, such as HD televisions, set top boxes and PCs. Both single and dual channel power switches are available,
with all devices being optimized for self-powered and bus-powered USB applications and fully compliant with all USB standards.
The power switches include an internal sensing FET which monitors for over-current conditions, without increasing series resistance in the
current path, and an over-temperature sensor. If either over-current or over temperature conditions are sensed, the device switches into its
current limiting mode. To prevent unwanted tripping when a high capacitive load is connected to the device output, a 7ms deglitch timeout has
also been included in the AP21XX’s design.
The USB power switch family is provided in small footprint SOT25, SOP-8L and MSOP-8L-EP packages. All of which are direct replacements
for existing industry standard parts. Device operating ambient temperature range is -40 to 85oC. AP21XX family devices are priced from $0.35
USD in 1k quantities for single power switches in SOT25 and are available through regular distribution channels.
The available devices are detailed in table below.
Part number |
Channel |
Enable |
Current limiting (A) |
Maximum operating current (A) |
Maximum operating ambient temperature (oc) |
Package |
AP2141 |
1 |
Active low |
0.8 |
0.5 |
-40 to +85 |
SOT25, SOP-8L, MSOP-8L-EP |
AP2151 |
Active high |
AP2161 |
Active low |
1.5 |
1 |
-40 to +85 |
SOT25, SOP-8L, MSOP-8L-EP |
AP2171 |
Active high |
AP2181 |
Active low |
2.1 |
1.5 |
0 to +70 |
SOT25, SOP-8L, MSOP-8L-EP* |
AP2191 |
Active high |
AP2142 |
2 |
Active low |
0.8 |
0.5 |
-40 to +85 |
SOP-8L, MSOP-8L-EP |
AP2152 |
Active high |
AP2162 |
Active low |
1.5 |
1 |
-40 to +85 |
SOP-8L, MSOP-8L-EP |
AP2172 |
Active high |
AP2181 |
Active low |
2.1 |
1.5 |
0 to +70 |
SOP-8L, MSOP-8L-EP* |
AP2192 |
Active high |
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